Type-writing machine



(No Model.) 2 Sheets-Sheet 1.

G. O. ERWIN & I. WINKLER.

I TYPE WRITING MACHINE.

Patented June 20, 1893.

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Ira/1 71 Wt)? 71 Z6 7 fijM-IW y- /d-} 4% War (No Model.) 2 Sheets-Sheet 2. G. 0. ERWIN 85 P. WINKLER.

TYPE WRITING MACHINE.

Patented June 20 UNITED STATES PATENT OFFICE.

CHARLES O. ERWIN AND FRANK \VINKLER, OF KANSAS CITY, KANSAS.

TYPE-WRITING MACHIN E.

SPECIFICATION forming part of Letters Patent No. 499,723, dated June 20, 1893. Application filed March 31, 1893. Serial No. 1 (N0 model-l To all whom it may concern.-

Be it known that we, CHARLES O. ERWIN and FRANK WINKLER, of Kansas City, Wyandotte county, Kansas, have invented certain new and useful Improvements in Spacing Attachments for Type-Vriters, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings, forming a part hereof.

Our invention relates to improvements in spacing attachments for typewriting machines; and the object of our invention is to provide an attachment by which the printing cylinder may be held at any desired point of revolution.

A further object of our invention, is to provide an attachment which can be easily applied to the Smith Premier typewriter in general use, and which can be used entirely independent of the usual pawl and ratchet mechanism for rotating said cylinder; and which is simple, strong, durable and inexpensive of construction, and reliable and positive in operation.

To the above purposes, our invention consists of certain peculiar and novel features of construction and arrangement, as will be hereinafter fully described and claimed.

In order that our invention may be fully understood, we will proceed to describe it with reference to the accompanying drawings, in which Figure 1, is a side elevation of the upper portion of a Smith Premier typewriter with my improved attachments applied thereto. Fig. 2, is a top plan view of the same. Fig. 3, is a horizontal sectional view to more clearly disclose the arrangement and construction of our improved spacing attachment. Fig. 4, shows a portion of the printing cylinder end of my improved attachment. Fig. 5, is a detail perspective view of the sliding frame and the locking disk carried thereby. Fig. 6, is a perspective of one end of the printing cylinder and showing the penetrable disk of my attachment secured thereto at one end. Fig. 7, is a vertical cross sectional view taken on the line oc-w of Fig. 3. Fig. 8, is a detailper spective view of the actuating cam lever. Fig. 9, is a detail perspective view of the dog adapted to trip and hold the locking pawl out of engagement with the ratchet wheel at one end of the cylinder, and FigrlO, is a detail perspective view of the lever adapted to hold the tripping dog out of engagement with the locking pawl.

Previous to our present invention, it has always been difficult to print by means of a typewriter, upon ruled paper or printed blanks, because of the predetermined distance the cylinder rotates at each intermittent movement. With our invention, the usual lever, ratchet and pawl, may be used to rotate and hold the cylinder at fixed and predetermined distances apart, or by means of aslidable sleeve, the locking-pawl may be held out of engagement with the ratchet Wheel, the cylinder be rotated, and held at any desired point, by a locking disk at the opposite end of,.t he cylinder, thus allowing printed blanks, forms, &c., to be written upon at any desired point.

Referring to the drawings, wherein similar numerals refer to similar parts in all the figures, 1 represents the upper portion of a Smith Premier typewriter, and 2 represents the usual printing cylinder, which is revolubly mounted upon a stationary shaft or axle 3; said shaft or axle being supported by brackets 4 in the usual manner. Secured at the right hand end of the cylinder is a ratchet wheel 5, the teeth 6 of which are arranged circularly on the outer face and at the outer margin thereof.

7 designates a skeleton supporting frame located upon the shaft of the cylinder at each end thereof, and 8 represents an arm which is pivoted at 8' to the supporting bracket 4, the forward end of said arm 8 being provided with a hook 8 engaging the brackets 7 carried by the shaft of the cylinder. The brackets 7 are connected at the rear and front sides of the cylinder by the longitudinally extending and horizontal tie rods 9 and 10; and a paper guide plate 11 also extended longitudinally of the cylinder is interposed between the tie rod 9 and the cylinder 2 and is heldin such a position by bearings 12 engaging the rod 9 near its opposite ends.

Pivotally mounted in suitable bearings at the right hand end of the machine is the horizontal rock shaft 13, the rearend of which carries a sleeve 14, which is formed with a longitudinal slot 15. A cylindrical pawl or dog 17 is fitted within the sleeve 14 and is provided with a pin or look 18 engaging the slot 15 thereof. Aspiral springis interposed between the inner end of said dog and the inner closed end of the sleeve 14; the tendency of said spring being to hold thedog or pawl 1n its extended position. The outer or front end of the rock shaft 13 is formed with a curved handle 19, by the operation of which, in the direction of arrow Fig. 2, the spring actuated pawl or dog 17 engages the teeth of the ratchet wheel 5 and revolves the cylinder. A spring actuated locking-pawl 21 is secured at 2 2 to the stationary supporting bracket 7 and has its free end adapted to successively engage the teeth 6 of the ratchet wheel 5 as the cylinder is rotated.

in the ordinary construction of theSmith Prem1ertypewriter,the rod10isformed solid andis provided with a longitudinal extended slot 23 in its right hand end: with our improved construction, however, we form this rod 10 tubular and also increase the length of the slot 23, which is however, arranged in the ordinary manner. A tripping dog 24 is formed with an extended arm which is pivoted at 25 on the pin or screw which secures the tubular rod 10 to theouter end of one of the arms of the adjacent bracket 7. This tripping dog is also formed with the inwardly extended and horizontal arm 26 adapted to engage the inner side of the spring actuated locking pawl 21, and is further provided with an off-set 27 upon which the thumb or finger may be placed to pivotally operate the tripping dog 24 to move the locking pawl from engagement with the teeth of the ratchet 5, so that the paper or printed blank may be removed from the cylinder when desired.

The construction above described is that employed in all Smith Premier typewriters and to employ our improved attachment it is only necessary as above described to form the front rod 10 tubularand also to form a notch or recess 28 in the free or outer end of the tripping dog 24; the object of this notch will be hereinafter referred to. The opposite or left hand end of the tubular rod 10 is formed with a longitudinally extending slot orgroove 29 and extending longitudinally and adapted to slide within said tubular rod 10 is a sliderod 30. A yoke-frame is composed of the longitudinal and horizontally arranged sleeve or tube section 31 and with the rearwardly extending and horizontal arms 32, said arms ,being arranged a suitable distance apart and carrying at their outer ends a disk 34, said disk being provided on its inner frame with a series of prongs or points 35, the object of which will be hereinafter referred to. The sleeve section 31 of the yoke frame is adapted to inclose and slide upon the tubular rod 10 and a set screw 33 passing through said sleeve and through the slot 29 of the tubular rod 10 engages or screws into the end of the sliderod 30.

Rigidly secured upon the end of the cylinder adjacent to the disk 34 is a penetrable disk 36, said disk being preferably secured in a metallic rim 37.

Secured by means of set-screw 38 upon the tubular rod 10-and a suitable distance in Ward or to the inner end of the sleeve or tube section 31 of the yoke frame, is a collar 39, and a spiral contracting-spring 4O surrounds said tube and is secured at its opposite ends to the collar and to the tube or sleeve section 31 of the yoke frame.

Pivotally mounted at 41 in the slotted portion 23 of the tubular rod 10 is a lever 42,said lever being adapted to operate pivotally through the slot 23, and formed at its outer end .with a lug or thumb-piece 43, by which said lever may be operated when desired; the free end of said lever is also formed with a cam face 44 which is adapted when the lever is operated by the pressure of thumb or finger upon the lug 43 to engage the end ,of the sleeve rod 30 and force said rod in the direction of arrow aFig. 3.

Pivoted at 46 adjacent to the pivotal point 41 of the lever 42 is a lever 47 which extends longitudinally of the rod and engages at its free end in the notch or recess 28 of the tripping dog 24. A sleeve 48 is mounted upon the tubular rod 10 and when slipped or moved to the position shown in Fig. 3 holds the lever 47 longitudinally within the slotted portion 23 of the tubular rod 10, and byso doing causes the free end of said lever 47 to bear ,upon the shoulder 28 of the dog 24, and pivotally operate the said dog so that the arm 26, will force and hold the locking-pawl from engagement with the teeth ofthe ratchet wheel 5. When the sliding sleeve 48 is moved to the position shown in Figs. 2 and 4 it pivotally operates and holds the lever-42 longitudinally within the slotted portion of the tubular rod 10, the cam surface thereof engaging and forcing the rod 30 in the direction of the arrow a, the operation and object of which will be hereinafter referred to in the description of the operation of the device. When said sleeve 48 is moved to the position shown in Figs. 2 and 4, the spring actuated locking pawl 21 resumes its original position in engagement with the teeth of the ratchet wheel and at the same time pivotally engages the arm 26 of the tripping dog 24, causing the offset 27 thereof, to pivotally operate the lever 47 to the position shown in Fig. 3.

When the sleeve 48 is in the positionshown in Figs. 2 and 4, the cylinder of the type- IIO writer is operated in the ordinary manner,

by means of the handle 19, and entirely independent of the improved attachment described. When, however, the sleeve is in the position shown in Fig. 3, the locking pawl 21 is held out of. engagement with the ratchet wheel 5 and the cylinder is in position for use with our improved attachments. The printed upon the desired line of the blank or form, pressure is applied upon the lug 43 of the lever 42 pivotally operating the same andcausing the cam surface 44 thereof, to engage the end of the slide rod 30 and move the locking disk 34 from engagement with the penetrabledisk 36, and at the same time thereby extending the spiral contracting-spring40; the print ing cylinder, is then grasped with the unoccupied hand, and revolved either forward or backward as necessary, to move the paper to the desired point. If desired, when the cylinderis to be moved forward only, the handle 19 may be grasped and moved in the ordinary manner until the paper is brought to the proper or desired point. The pressure is then removed from the lever 42 allowing the spring to contract and slide the yoke frame carrying the locking disk 34, in the direction of the arrow 1), and resume its original position, so that the prongs or points of the disk 34 shall re-engage the penetrabledisk 36 and hold the cylinder in its locked position.

WVhen it is desired to use the typewriter with unruled paper, the sliding sleeve 48 is moved to the position shown in Figs. 2 and 4, which causes cam face 44 of the lever 42 to engage the slide rod 30 and hold the locking disk 34 out of engagement with the penetrable disk 36; and also allows the locking pawl 21 to resume its original former position in engagement with the teeth 6 of the ratchet wheel 5.

From the above description, it will be seen that we have produced attachments which are comparatively simple and inexpensive, by which the cylinder of the Smith Premier typewriter may be rotated to any point desired; and also attachments which may be easily applied and which are positive and effective in operation.

It is to be understood, that with certain modifications not shown herein or described, this principle may also be applied to typewriters of different construction.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is l 1. In a spacing attachment for typewriters, the combination with a rotatable cylinder, of a penetrable-disk secured to one end of said cylinder, and a'slidable frame having a locking disk adapted to engage the penetrable-disk, to prevent the rotatable movement of the cylinder, substantially as set forth.

2. In a spacing attachment for typewriters, the combination with a rotatable cylinder having a penetrable-disk at one end and a ratchet wheel at the other, of a slidable frame carry ing a locking disk adjacent to the penetrabledisk of the cylinder, and a spring actuated pawl engaging the ratchet wheel, and means to move and hold said spring actuated pawl out of engagement with said ratchet to allow the spring actuated frame to cause the lockin g disk to engage the penetrable-disk carried der, connected at the front side of said cylinderby a tubular and slotted tierod, a yokeframe comprising a tubular or sleeve section inclosing said tubular rod near one end and carrying the locking disk, a slide-rod fitted within said tubular rod and a set screw passing through the slotted end of said tubularrod and connecting the sleeve sectionof the sliding frame with the slide rod, a lever pivoted within the opposite and slotted end of the tubular-rod havinga cam face at its outer end, adapted when operated to engage and longitudinally move the slide-rod within the tubular rod, substantially as set forth.

5. A spacing attachment for typewriters, comprising a rotatable cylinder having a ratchet wheel at one end, a spring actuated pawl engaging said ratchet wheel, a tubular and longitudinally extending rod slotted at each end at the front side of said cylinder, and connecting supporting brackets at each end of said cylinder, at tripping-dog pivoted within the slotted tubular rod havinga notch formed in its rear end, a lever pivoted within said slotted and tubular rod, having its free end engaging the notch of the tripping dog, and a slidable sleeve mounted upon said tubular rod and adapted to pivotally operate said lever to cause the tripping dog to raise and hold the locking pawl out of engagement with the ratchet teeth at the end of the cylinder, substantially as set forth.

6. In a spacing attachment fortypewriters, the combination of a rotatable cylinder having a penetrable-disk at one end and a ratchet wheel at the other end, of a spring actuated locking pawl adapted to engage the teeth of the ratchet wheel, a longitudinally extended tubular rod at the front side of the cylinder, a sliding frame mounted to slide thereon and carrying a locking disk adjacent to the penetrable disk of the cylinder, a slide rod within said tubular rod and connected to the sliding frame, a tripping dog pivoted within the tubular rod and engaging the spring actuated locking pawl, a lever pivoted within said tubular rod, and adapted to engage the slide rod, and a lever pivoted within the tubular rod, and adapted to operate the tripping dog, and a slidable sleeve mounted upon said tubular rod and adapted to pivotally operate the lever to move the locking disk from engagement with the penetrabledisk or to operate the lever to actuate the tripping dog, to move and hold the locking plate out of engagement with a ratchet wheel as desired,

substantially as described.

7. In a spacing attachment for typewriters, a combination with a revoluble cylinder having a penetrable-disk secured at one end, of a tubular rod having a collar secured thereon, and a sliding yoke-frame also mounted upon said tubular rod and carryingalocking disk adjacent to the penetrable disk of the cylinder, and a contracting spring spirally encircling the tubular rod, and secured atits opposite ends to the collar and to the tubular sleeve section of the yoke-frame mounted upon the tubular rod, and adapted to hold the locking disk in engagement with the penetrable-disk to prevent the revolution of the cylinder, substantially as set forth.

In testimony whereof we affix our signatures in the presence of two witnesses.

CHARLES O. ERWIN. FRANK WINKLER. Witnesses:

MAUD FITZPATRIOK, M. P. SMITH. 

